96 Mr. R. I. Pocock on Neotropical Scorpions. 
_ This species differs from B. bonariensis in very many 
characters, ¢. g. in having finely granular sterna, smaller and 
more oval stigmata, the fifth caudal segment with inferior 
lateral denticulate keels, at least in the posterior two thirds of 
the segment, Kc. 
It further undoubtedly differs from Thorell’s B. @ Orbignyt 
(Guér.) in the keeling of the fifth caudal segment and in 
having finely granular sterna. JI am not confident that 
Guerin’s @’ Orbigny? is the same as Thorell’s. Guérin, how- 
ever, describes his species as being lisse e¢ luisant and as 
having twenty-six pectinal teeth. In these two particulars 
this form from Chili appears to differ from it. 
Bothriurus Keyserlingti, sp. n. 
CPL PVe tigs.2979'a:) 
Allied to B. bonariensis. 
Carapace smooth above, very finely granular at the sides. 
Tergites very finely granular, the last more coarsely so. 
Tail like that of B. bonariensis for the most part, but slightly 
less robust, with the first segment furnished beneath with four 
smooth and rather irregularly shaped keels, and the posterior 
segment coarsely granular in its posterior hali, with the area 
which is so clearly defined in b. bonariensis developed only as 
in B, coriaceus. 
The palpi as in the female of B. bonariensis. 
The fifth sternite of the abdomen furnished with four smooth 
keels. 
Length about 40 millim. 
A single dried (prebably ?) example in the late Count 
Keyserling’s collection, ticketed Chili or Peru. 
Most nearly related to B. cortaceus, which it resembles in 
the structure of the fifth caudal segment, but easily to be 
recognized by presence of four keels on the last abdominal 
sternite and upon the first caudal segment. 
Bothriurus asper, sp. n. 
(Pl. V. fig. 10.) 
Young male. Colour fuscous, with a distinct median fulvous 
dorsal band on the tergites; the legs, palpi, and lower surface 
of the tail irregularly variegated with flavous spots and bands, 
Carapace finely and closely granular throughout, except 
on the summit of the ocular tubercle, which is smooth and 
polished ; this tubercle obscurely sulcate above ; the eyes large, 
the distance between them being about equal to a diameter. 
